随机光纤激光器中光纤与随机介质匹配问题的研究

王慧琴; 龚旗煌

doi:10.7498/aps.62.214202

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摘要

降低阈值是随机激光实用化的前提, 随机光纤激光器是将随机增益介质填充到空芯光子晶体光纤中利用其光子禁带来降低阈值的一种随机激光器. 理论分析表明: 在光子晶体光纤光子禁带的约束下, 随机光纤激光器中的大部分能量被集中在芯区传播, 这使局域在芯区的光与随机介质相互作用得到增强, 激发效率得以提高. 然而, 光纤填充介质后, 纤芯等效折射率发生了改变, 光子带隙也会随之移动, 因此当选用带隙光纤来降低阈值时, 只考虑光纤本身的带隙是不够的, 应考虑到介质的增益频率和填充后的光子带隙之间的匹配问题, 合理选择光纤或介质的材料, 如果匹配得当, 光子禁带对激光的调控能力会更强, 激光阈值有望得到更大程度的降低.

关键词:

作者及机构信息

王慧琴^{1 2},
龚旗煌²

1.
南昌大学理学院基础物理实验中心, 南昌 330031;

2.
北京大学物理学院人工微结构与介观物理国家重点实验室, 北京 100871

基金项目: 国家自然科学基金 (批准号: 61168001)、江西省自然科学基金 (批准号: 2010gzw0045) 和江西省教育厅科技项目 (批准号: GJJ11365)资助的课题.

参考文献

[1]	Lawandy N M, Balachandran R M, Gomes A S L, Sauvain E 1994 Nature 368 436
[2]	Cao H, Zhao Y G, Ho S T, Seelig E W, Wang Q H, Chang R P H 1999 Phys. Rev. Lett. 82 2278
[3]	Wiersma D S 2000 Nature 406 132
[4]	Treci H E, Li G, Rotter S, Stone A D 2008 Science 320 623
[5]	Xu Y, Li Y P, Jin L, Ma X Y,Yang D R 2013 Acta Phys. Sin. 62 084207 (in Chinese) [徐韵, 李云鹏, 金璐, 马向阳, 杨德仁 2013 物理学报 62 084207]
[6]	Zacharakis G, Papadogiannis N A, Papazoglou T G 2002 Appl. Phys. Lett. 81 2511
[7]	Chang S H, Cao H, Ho S T 2003 IEEE J. Quantum Electron 39 364
[8]	Dice G D, Mujumdar S, Elezzabia A Y 2005 Appl. Phys. Lett. 86 131105
[9]	Zhai T R, Zhang X P, Pang Z G, Su X Q, Liu H M, Feng S F, Wang L 2011 Nano Lett. 11 4295
[10]	Wang H Q, Fang L G, Wang Y F, YU A L 2011 Acta Phys. Sin. 60 014203 (in Chinese) [王慧琴, 方利广, 王一凡, 余奥列 2011 物理学报 60 014203]
[11]	Wang H Q, Liu Z D 2009 Acta Phys. Sin. 58 1648 (in Chinese) [王慧琴, 刘正东 2009 物理学报 58 1648]
[12]	Wang H Q, Ouyang H, Han D F,Wang Y F 2011 Optoelectronics Letters 7 179
[13]	Matos C J S, Menezes L S, Brito-Silva A M, Martinez Gámez M A, Gomes A S L, Araújo C B 2007 Phys. Rev. Lett. 99 153903
[14]	Hua Z J, Zheng H J, Wang L J, Tian X J, Wang T X, Zhang Q J, Zou G, Chen Y, Zhang Q 2012 Optics Commu. 285 3967
[15]	L J T, Wang K J, Liu J S, Yao J Q, Zhu Q H, Zhang Q Q 2011 Acta Phys. Sin. 60 074203 (in Chinese) [吕健滔, 王可嘉, 刘劲松, 姚建铨, 朱启华, 张清泉 2011 物理学报 60 074203]
[16]	Wang H Q, Liu Z D, Wang B 2008 Acta Phys. Sin. 57 2186 (in Chinese) [王慧琴, 刘正东, 王冰 2008 物理学报 57 2186]
[17]	Xie Y M, Liu Z D 2005 Phys. Lett. A 341 339
[18]	Shen X W, Yuan J H, Sang X Z, Yu C X, Rao L, Xia M, Han Y, Xia C M, Hou L T, Wu Z C, He X L 2013 Chin. Phys. B 22 014102
[19]	Qin W, Li S G, Xue J R, Xin X J, Zhang L 2013 Chin. Phys. B 22 074213
[20]	Shen X W, Y J H, Sang X Z, Yu C X, Rao L, Xin X J, Xia M, Han Y, Xia C M, Hou L T 2012 Chin. Phys. B 21 074209

施引文献

[1]	Lawandy N M, Balachandran R M, Gomes A S L, Sauvain E 1994 Nature 368 436
[2]	Cao H, Zhao Y G, Ho S T, Seelig E W, Wang Q H, Chang R P H 1999 Phys. Rev. Lett. 82 2278
[3]	Wiersma D S 2000 Nature 406 132
[4]	Treci H E, Li G, Rotter S, Stone A D 2008 Science 320 623
[5]	Xu Y, Li Y P, Jin L, Ma X Y,Yang D R 2013 Acta Phys. Sin. 62 084207 (in Chinese) [徐韵, 李云鹏, 金璐, 马向阳, 杨德仁 2013 物理学报 62 084207]
[6]	Zacharakis G, Papadogiannis N A, Papazoglou T G 2002 Appl. Phys. Lett. 81 2511
[7]	Chang S H, Cao H, Ho S T 2003 IEEE J. Quantum Electron 39 364
[8]	Dice G D, Mujumdar S, Elezzabia A Y 2005 Appl. Phys. Lett. 86 131105
[9]	Zhai T R, Zhang X P, Pang Z G, Su X Q, Liu H M, Feng S F, Wang L 2011 Nano Lett. 11 4295
[10]	Wang H Q, Fang L G, Wang Y F, YU A L 2011 Acta Phys. Sin. 60 014203 (in Chinese) [王慧琴, 方利广, 王一凡, 余奥列 2011 物理学报 60 014203]
[11]	Wang H Q, Liu Z D 2009 Acta Phys. Sin. 58 1648 (in Chinese) [王慧琴, 刘正东 2009 物理学报 58 1648]
[12]	Wang H Q, Ouyang H, Han D F,Wang Y F 2011 Optoelectronics Letters 7 179
[13]	Matos C J S, Menezes L S, Brito-Silva A M, Martinez Gámez M A, Gomes A S L, Araújo C B 2007 Phys. Rev. Lett. 99 153903
[14]	Hua Z J, Zheng H J, Wang L J, Tian X J, Wang T X, Zhang Q J, Zou G, Chen Y, Zhang Q 2012 Optics Commu. 285 3967
[15]	L J T, Wang K J, Liu J S, Yao J Q, Zhu Q H, Zhang Q Q 2011 Acta Phys. Sin. 60 074203 (in Chinese) [吕健滔, 王可嘉, 刘劲松, 姚建铨, 朱启华, 张清泉 2011 物理学报 60 074203]
[16]	Wang H Q, Liu Z D, Wang B 2008 Acta Phys. Sin. 57 2186 (in Chinese) [王慧琴, 刘正东, 王冰 2008 物理学报 57 2186]
[17]	Xie Y M, Liu Z D 2005 Phys. Lett. A 341 339
[18]	Shen X W, Yuan J H, Sang X Z, Yu C X, Rao L, Xia M, Han Y, Xia C M, Hou L T, Wu Z C, He X L 2013 Chin. Phys. B 22 014102
[19]	Qin W, Li S G, Xue J R, Xin X J, Zhang L 2013 Chin. Phys. B 22 074213
[20]	Shen X W, Y J H, Sang X Z, Yu C X, Rao L, Xin X J, Xia M, Han Y, Xia C M, Hou L T 2012 Chin. Phys. B 21 074209

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随机光纤激光器中光纤与随机介质匹配问题的研究

1. 南昌大学理学院基础物理实验中心, 南昌 330031;

2. 北京大学物理学院人工微结构与介观物理国家重点实验室, 北京 100871

基金项目:

国家自然科学基金 (批准号: 61168001)、江西省自然科学基金 (批准号: 2010gzw0045) 和江西省教育厅科技项目 (批准号: GJJ11365)资助的课题.

收稿日期: 2013-05-14

修回日期: 2013-07-24

刊出日期: 2013-11-05

摘要: 降低阈值是随机激光实用化的前提, 随机光纤激光器是将随机增益介质填充到空芯光子晶体光纤中利用其光子禁带来降低阈值的一种随机激光器. 理论分析表明: 在光子晶体光纤光子禁带的约束下, 随机光纤激光器中的大部分能量被集中在芯区传播, 这使局域在芯区的光与随机介质相互作用得到增强, 激发效率得以提高. 然而, 光纤填充介质后, 纤芯等效折射率发生了改变, 光子带隙也会随之移动, 因此当选用带隙光纤来降低阈值时, 只考虑光纤本身的带隙是不够的, 应考虑到介质的增益频率和填充后的光子带隙之间的匹配问题, 合理选择光纤或介质的材料, 如果匹配得当, 光子禁带对激光的调控能力会更强, 激光阈值有望得到更大程度的降低.

关键词:

Discussion on the problem of random media matching with the PCF for RFL

1.
Physics Experiment Center, Nanchang University, Nanchang 330031, China;

2.
State Key Laboratory for Mesoscopic Physics & Department of Physics, Peking University, Beijing 100871, China

Fund Project:

Project supported by the National Natural Science Foundation of China (Grant No. 61168001), the Natural Science Foundation of Jiangxi Province, China (Grant No. 2010gzw0045), and the Technology Project of Education Department in Jiangxi Province, China (Grant No. GJJ11365).

Received Date: 14 May 2013

Accepted Date: 24 July 2013

Published Online: 05 November 2013

Abstract: To reduce the threshold is an important requirement for utilizing the random laser. RFL (random fiber laser) is a new random laser which user the photonic bandgap of PCF to lower the threshold by filling the random medium into a hollow-core PCF. Theoretical analysis shows that most of the emitted light is concentrated in the core of the fiber because of the controlling of the bandgap, which should enhance the interaction between the random medium and the localized light for the light oscillating back and for the thin core region, therefore the excitation efficiency of the random laser could be improved. However, the band gap of PCF filled with the random medium should be changed, so when choosing fiber to reduce the threshold for RFL, we should consider the matching between the new bandgap of the padded fiber and the gain frequency of the medium, and arrange the fiber and medium in pairs reasonably. If the PCF matches with the medium, the lasing may be enhancedly regulated and controlled and the threshold can be reduced greatly.

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